Goodwe Overtemperature Alert – Troubleshooting &... | solardiagnostics.org

Technical Background:

The overtemperature alert is triggered when the inverter's internal temperature exceeds safe operational limits, which is a protective mechanism to prevent damage. Inverters are designed to operate within specific temperature ranges, typically between -13°F and 140°F (-25°C to 60°C). The inverter monitors its internal temperature using thermistors. If the temperature sensor detects values beyond the threshold, it initiates a fault code to prevent overheating and potential failure. Factors such as RISO measurement (insulation resistance testing) and ground fault detection can also influence the inverter’s operational status, but primarily, overheating results from inadequate cooling or excessive operational demands.

Symptoms:

When a Goodwe inverter triggers an overtemperature alert, users may observe a red LED indicator flashing or a solid red light on the inverter display. Additionally, monitoring apps may show alerts indicating a fault, and users may notice a significant drop in energy production, reflecting the inverter's protective response to overheating.

Possible Causes:

Insufficient ventilation around the inverter leading to thermal accumulation.
High ambient temperatures exceeding the inverter's operational limits.
Overloading of the inverter due to excessive power generation from the solar array.
Faulty temperature sensors within the inverter.
Poor system practices, including inadequate spacing from walls or other obstructions.
Accumulation of dust and debris on or around the inverter affecting heat dissipation.

Solution:

1

Inspect the system site for proper ventilation; ensure there is at least 12 inches of clearance around the inverter.
2

Measure the ambient temperature using a calibrated thermometer; ensure it is within the inverter's specified operating range.
3

Check the inverter's output against the expected production; verify that the solar array is not generating more power than the inverter can handle.
4

Use a multimeter to test the temperature sensor readings; replace if faulty or out of specification.
5

Clean the inverter and surrounding area to remove any dust or debris that could obstruct airflow.
6

If overloading is suspected, consider redistributing the load or adding additional inverters to handle excess generation.

Safety Warning:

Always consult a licensed electrician or certified solar installer when addressing inverter issues. Working with electrical systems can be hazardous, and proper safety protocols must be followed.

Prevention:

To avoid future overtemperature alerts, ensure that the inverter is installed in a well-ventilated area, away from direct sunlight and heat sources. Regular maintenance should include cleaning the inverter and checking for any obstructions that could impede airflow. Additionally, monitor the system's performance and energy generation to ensure the inverter is not being overloaded, and make adjustments as necessary.

Frequently Asked Questions

•What causes an overtemperature alert in inverters?

An overtemperature alert can be caused by excessive heat due to poor ventilation or high ambient temperatures. It's essential to ensure proper airflow around the inverter.

•How can I prevent overtemperature alerts?

To prevent overtemperature alerts, ensure the inverter is installed in a shaded area with adequate airflow. Regular maintenance checks can also help identify potential issues.

Goodwe Overtemperature Alert – Troubleshooting & Technical Fix Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Frequently Asked Questions

•What causes an overtemperature alert in inverters?

•How can I prevent overtemperature alerts?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention: